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list of classical problems (unsolved)


ID NAME QUALITY USERS ACC % DIFFICULTY C I
27520 Laser   5 43 19.94
17
17
20863 Largest Submatrix   82 27.21
1805 Largest Rectangle in a Histogram   229 8767 28.42
18
23
25131 Largest Odd Divisor   17 1438 33.60
6
7
7782 Largest Labeled Common Ancestor   1 208 57.44
18450 Largest Increasing Sub-Matrix   12 12.24
34864 Large Sum   8 236 18.39
12
12
20063 Large subsequence Problem   20 453 42.16
10
14
2734 Large party   40 26.19
15259 Large Knapsack   46 2294 26.12
17
17
11090 Large banner   33 32.26
33372 Lannister Army   12 412 21.02
20
29
350 Landscaping   1 99 30.08
4189 Landing   1 8 4.08
50
50
9378 Landfill   70 42.44
148 Land for Motorways   3 215 41.02
17
21
7778 Land Division   1 40 43.50
17
17
15086 Land Acquisition   39 1504 29.48
24
30
17955 Lalith Dosa   9 428 26.24
12
23
3394 Lagrange’s Four-Square Theorem   4 532 46.08
1
9
38 Labyrinth   98 5361 25.82
18
16
5531 Kutevi Hard   90 43.40
16244 Kusac   6 411 36.44
14
21
24313 Kule   2 20 17.16
17
26
26953 Kuchu the Bookworm   -1 52 13.79
17
15
3941 Kth Shortest Path   25 24.30
34812 Kth Power Summation   6 61 16.64
25
19
19039 Krypt in Time   -1 299 41.91
34
1
2154 Kruskal   85 14.03
3832 Kruska   4 107 46.57
17
17
8351 KOSARK   8 852 42.90
12
5
13106 KOSARE   3 389 50.70
23
39
11179 Korra in the Spirit World   26 41.24
10069 Kompići   19 842 68.46
11
20
8434 Kolica   2 68 40.10
34
17
28465 Koalas   1 17 15.24
34
17
36537 Koala Fan   8 50 25.36
13
10
3393 Knot or Not   10 16.67
10620 KNJIGE   28 1450 44.45
5
18
2878 Knights of the Round Table   2 564 22.72
9
17
32271 KNIGHTS level testing   1 11 21.13
34
17
5609 Knight Moves   6 107 40.69
9
20
27225 Knight Move   12 466 30.10
15
14
13875 Knifes Are Fun   11 1304 43.43
3
7
22804 Knapsack   4 56 30.87
21
23
7805 Kitchen Robot   3 90 32.24
9
9
2415 Kirchhof Law   2 105 21.42
17
17
37375 Kingdom of Equality   2 14 40.62
26
26
22554 Kingdom   1 41 45.39
34
34
14925 King Graffs Trip   2 27 21.53
34
34

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